LEAP#391 Packaging the mV Meter
A while back I breadboarded an ATmega328-based millivolt meter based on a design by Scullcom Hobby Electronics. It uses an LTC2400 ADC and LT1019 voltage reference, and has some nice display modes on a 16x2 LCD.
It’s a nice design so I decided to go the whole hog and fab a PCB at OSHpark, but this time using EasyEDA for the schematic capture and board design. Althoughit’s PCB design tools are relatively primative, it turned out just fine!
As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub
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LEAP#389 Two-Stage Amp Design
Reviewing techniques for two-stage CE amplifier design.
Gobsmacked that my calcs put me within 3% of actual performance,
and I got a workable Class A amplifier to boot!
As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub
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LEAP#387 GPS Modules
This is the first time I’ve played around with a GPS module, so it was an interesting dive into NEMA standards.
But at the end of the day, the TinyGPSPlus library makes it a piece of cake
to get GPS readings. I log these to serial and display the main facts on an LCD.
As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub
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LEAP#386 The Blue Pill
Popularly known as the Blue Pill, the STM32F103C8T6 Minimum System Development Board seems like an excellent gateway drug for getting into ARM Cortex-M3 development.
This is particularly true as it is possible to program it with the familar Arduino IDE.
It is my first look at one of these boards, so I have simple expectations - follow along some of the tutorials on the web/youtube and at least get a simple program running on the board. In the process I’ll learn a bit more about the board’s capabilities and quirks.
As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub
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